Shire horses are certainly heavy horses.
The Heavy Horse
There are around 180 breeds to 200 breeds of horses
Large, heavy horses, with long hair called feathering around the hooves. Clydesdales, Shires, and Percherons are draft breeds .Also the Belgium.
There are hundreds of breeds of horses.
Clydesdale, Arabian, and appaloosas are all breeds of horses.
yes, over 250 breeds of horses roam the earth.
There is a paint breed...but the pattern is found in other breeds such as TB's and QH's
There is over 100 breeds of horses throughout the world.
There are 267 equine breeds.
"Main breeds" really depends on where you live. Main breeds of horses in the USA and Canada, for example, are thoroughbreds, arabians, quarter-horses, morgans, clydesdales, etc.
Quarter Horses Throughbreds Paint Horses
The generic term is "draft horse" (sometimes "draught horse" or "dray horse"). Any breed of heavy horse can be used for pulling heavy loads. Different locations favor different breeds, but some notable ones are: Shire Percheron Clydesdale